One answer

It appears that you just put two separate things together due to misunderstanding. Have a look into the document to understand the difference between an authorized license and a floating license.
http://www.ibm.com/support/knowledgecenter/SSYMRC_6.0.2/com.ibm.jazz.repository.web.admin.doc/topics/c_managing_licenses.html

The trial version of CLM comes with 10 trial licenses, which should be enough for a usual trial project. If you have more than 10 users participating in the trial project, you should contact IBM Sales to organize getting some more licenses.

To access the server from another machine, which is a completely separate topic, and has nothing to do with licenses. It depends on how you install the product and configure the public URI. Make sure that you do not use "localhost", "127.0.0.1" or even any IP addresses in the public URI. Note that you can access the CLM system without a license, but just can't carry out certain operations.